Question

a sum of money trebles in 16 years find the rate of interest​​

Answer 1

Answer:

the rate of interest is 2\3+100 that is 187 is multiplied by 36 the the formlula is prohibited

Answer 2

$\huge\underbrace\mathrm\purple{Answer:-}$

${\fcolorbox{green}{yellw}{Let sum be x}}$

${\fcolorbox{green}{yellw}{After 3 years its becomes triple itself then}}$

$⇒{\fcolorbox{green}{yellw}{Amount = 3x}}$

$⇒{\fcolorbox{green}{yellw}{Interest=3x - x=2x}}$

$⇒{\fcolorbox{green}{yellw}{Time = 16 years}}$

$⇒{\fcolorbox{green}{yellw}{Rate = R}}$

$⇒{\fcolorbox{green}{yellw}{Interest = 100ptr}}$

$⇒{\fcolorbox{green}{yellw}{2x=100x x16 x R}}$

${\fcolorbox{green}{yellw}{r=162x100=12.5\%}}$